Kent · England
External & façade joints in Offham, Kent
Sealing brickwork movement joints, render, cladding and façade joints for Offham, backed by a 12-month guarantee. Call for a quick quote.
- Brick movement joints where the sealant has split
- Water getting into walls through failed joints
- Weathered mastic that no longer stretches
External mastic in Offham, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. We work on concrete & block, façade panels and joints between brick and frames, and people most often call us about hard, crazed mastic that has stopped moving and leaking joints around cladding and façade panels.
External sealant needs dry, clean surfaces, so work around Offham is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
There’s a 12-month guarantee on every job, large or small.
- Place
- Offham (ME19)
- Region
- Kent
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Offham questions
Can you help a landlord with a rental near West Malling station?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Offham within the area you cover?
Yes. Offham is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is the work guaranteed?
Yes. Every job comes with a one-year guarantee.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do you work at height?
It depends on the height and the site. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
How long does external mastic last?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our 12-month guarantee.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours on commercial sites
- The number and length of the joints
- Access and height
- Whether there’s mould to deal with
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
- The rough size of the job
Every job is quoted individually. Just ring 0345 464 0079 or drop us an email with the details.
Why act early in Offham
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way and it means sorting access once. Where a wall is exposed, as many are in small places like Offham, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
Why Offham clients choose us
- 180+ five-star Google reviews
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
- Sealant colour chosen to suit
See what affects the cost and customer reviews.
Outside joints around Offham
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Old Soar Manor (about 3.1 miles south-west) nearby, there’s older building stock in the area around Offham as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as Church of St Michael, an extension built onto an older house moves differently, and the joint between them takes the strain. If you let a flat or house near West Malling station, split movement joints are easy to miss on a rental until damp shows inside.
Offham is about 7 miles west of Maidstone, in Kent. Wherever you are in the ME19 postcode area, we can carry out external mastic at your property. We cover 922 towns and villages across Kent, large and small. London is on our list too, about 25 miles from Offham.
All of ME19 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Church Road, Pepingstraw Close and Teston Road or anywhere close by, our applicators can take on the job. Other places close to Offham include Wrotham Heath (1 mile west), Comp (2 miles west), Kent Street (2 miles south), New Pound (2 miles south) and Herne Pound (2 miles south). Within a short drive, we also cover Maidstone (7 miles east), Dartford (12 miles north-west), Sevenoaks (8 miles west), Royal Tunbridge Wells (12 miles south-west), Gravesend (10 miles north) and Tonbridge (8 miles south-west).
Landmarks near Offham
In Offham, that means homes and buildings near King's Arms Public House and Manor Park Country Park, among other places. The closest station to Offham is West Malling station, about 1.9 miles east of the centre. Nearby you will also find Leybourne Castle (2.2 miles north-east) and Maidstone Hospital (4.8 miles east).
For landlords and businesses
We also work for property managers and facilities teams in Offham and across Kent. We can quote a run of properties together.
If you manage several properties in or around Offham, several properties can be quoted together. Just tell us the addresses and what each one needs.
When to call us in Offham
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
Common reasons people contact us include:
- Weeds or debris growing in open joints
- Rigid filler in a joint that should flex
- Panel joints letting water in
- Damp patches traced to an open external joint
Managing a site like Offham Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- Whether the sealant suits the joint
- Are they insured?
- What the cure time is
- How the surfaces are prepared before sealing
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Keep high-pressure jets off the joints
- Get split or bare joints resealed while the damage is small
- Do not let climbing plants root in the sealant
- Keep water from gutters off the wall
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
How it works
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we tell you how long to leave it before we go. Somewhere like Offham needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
Get a quote
If you’re in Offham and need external mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.